May glutathione S-transferase M1 positive genotype afford protection against primary open-angle glaucoma?

• DOI: 10.1007/s00417-004-1013-9
• Publication Date: 2004-11-16T10:16:46Z
• Authors: Özlem Yildirim; Nurcan Aras Ateş; Lülüfer Tamer; Özay Öz; Ayça Yilmaz; Uĝur Atik; Handan Çamdeviren
• Keywords: Adult; Male; 0301 basic medicine; Polymorphism, Genetic; Genotype; Middle Aged; Polymerase Chain Reaction; 3. Good health; Isoenzymes; 03 medical and health sciences; Glutathione S-Transferase pi; Risk Factors; Humans; Female; Glaucoma, Open-Angle; Intraocular Pressure; Aged; DNA Primers; Glutathione Transferase

To find out whether the polymorphism at GSTM1, GSTT1 and GSTP1 loci is associated with increased susceptibility to glaucoma.We genotyped 153 primary open angle patients and 159 healthy controls. Genomic DNA from peripheral blood was examined using polymerase chain reaction and defined for the genetic polymorphisms of glutathione S-transferase.The frequency of the GSTM1 null genotype individuals among the glaucoma patients was significanlty higher than in controls (54.9 vs 40.9%) with odds ratio of 1.64 (95% CI: 1.10-2.59). The frequency of the GSTT1 and GSTP1 in both groups were not statistically different.The present study suggests that the GSTM1 null genotype may be a genetic risk factor for development of primary open angle glaucoma. Further associations studies in other polymorphic genes for xenobiotic-metabolizing enzymes are needed to elucidate the environmental-genetic interaction in the underlying cause of primary open angle glaucoma.